Adjustable arm support means



Feb. 5, 1952- M. WElNBERG v ADJUSTABLE ARM SUPPORT MEANS Filed Feb. 10,. 1948 HTIOR/VEY Patented Feb. 5, 1952 U NITED :S TAT ES PATENT 0 FF 1 CE ADJUSTABLE ARM SUPPORT MEAN S 1 Marvin- Weinberg, N ew. York,'N. Y. I Application February 10,1948, SerialNo." 7,361

-'!I'liis 'inventicn relates to adjustable arnr support meanslfor verticallysustained uprights :or standards and haszforits ob'ject the provision of'su'ch an adjustablearmlsupport means adapted for use with substantially square section uprights andT of' 'wide utility in a plurality of different fields such as bedside tables, floor and table lamps, chemical standsg photographic enlarging apparatus, and the-like devices, wherein an arm is sustained at one end in a horizontalposition from a vertical standard and adjustment of the arm along the standard to' a desired horizontal level is desired.

More particularly the present inventlon aims -itoprovide such an adjustable, arm support-means w-hich is adapted for use'with substantially square sectioned metallic'tubing.

A further object is to.- provide an improved bed-sidertable.

Fig. 1 is a side elevational view of a bed-side table provided with the improved adjustable arm support means of the present invention;

Fig. 2 is a top view of the same;

Fig. 3 is a sectional view of the same taken along plane 3-3 of Fig. 1; and

Fig. 4 is a sectional view of the same taken along plane 54 of Fig. 2.

As indicated in the drawings, a horizontal arm A carrying a table top T is sustained at one end in a horizontal position by vertical standard S, which is sustained at its bottom end by horizontally extending legs L1, L2 and L3 resting on a base, such as a floor. Arm A and standard S each consist of substantially identical square sectioned material, preferably but not necessarily comprised of metal, and still more preferably but not necessarily comprised of square sectioned tubing comprised of light weight metal such as aluminum or magnesium or base alloys thereof.

It is desirable, in sustaining arm A upon standard S, to provide a sustaining or end-anchoring 1 Claim. (CI-248*!712) means for the arm A which may be readily I Indie-present invention,-"this' objective is at- "tained 'by'a" simple structure consisting of sub stantially triangular shaped and plane surfaced side arms -ll-'Hl'" and substantially square sectionecl cross-bar II. Side arms 10 are secured -'at 'their* small ends by threaded bolts l2--'l2' on opposite sides of arm A with their large-ends "tion between the side arms Hllll adjacent the upper corners of said arms by'means of threaded screws l3-l3' engaging into threaded recesses in the opposite'ends'bf 1 cross-bar I l 'with one of the faces "of the" cross-bar disposed parallel-to theadjacent plane surface of the standard-S and with-Zthe'bar axis-lying in a horizontal plane substantially above the horizontal plane ofthe '20 loweredgeof' the square end of armA to and against the adjacent plane surface of standard S as the weight of arm A pivots the arm downwardly about the axis of screws |3--l3'.

With this arrangement it may be seen that with a very small space gap between the square sectioned end of arm A and the adjacent plane surface of square sectioned standard S any reverse pivoting of arm A about the axis of screws l 3l 3' overcoming the weight of arm A, will free the lower butt edge of the end of arm A from anchoring engagement with the adjacent plane surface of standard S permitting the arm A and the anchoring means to be lifted or lowered along the vertical length of standard S to a new horizontal position whereupon a return of the arm weight the arm A is again anchored along its lower butt edge against the surface of standard S.

Normally, where the surface of standard S is not a polished surface, the pinching movement of arm A about the pivot point is sufiicient to frictionally engage the lower butt edge of arm A against the surface of standard S to anchor the arm A in adjusted position thereon. However, where standard S is provided with smooth and polished surfaces it is desirable to provide a supplementary anchoring means, such as threaded wing-bolt I 5 having the end thereof extending through one side-arm H1 (or It) into contact with the adjacent face of standard S, to oif-set such surface smoothness and to lock the anchoring means in each adjusted position.

Table-top T on arm A is a type of table-top which, per se, is old and well known in the art and forms no part of the present invention except as modified as shown to adapt the same for adjustable movement along arm A. As indicated in Figs. 1 and 3, the top T is sustained in a horizontal position uponthe arm A by means of clamps l6 and H, clamp I! being a pinch clamp actuated by wing-bolt 18.

It is believed apparent to any one skilled in the art that table-top T may be displaced by a plurality of devices and apparatus without departure from the invention.

It is also believed apparent that the particular shape of side-arms |fl'l0 may be widely varied without departure from the invention as long as the said side-arms are flat-sided and are secured to arm A at one end and to cross-bar H at the opposite end on opposite sides of standard S in substantially the same manner indicated in thedrawings to form a, flat-sided recess therebetween in. which the standard S is engaged with arm A pivotally sustained by the cross-bar II. This assembly prevents axial rotation of arm A in either anchored or unanchored position which is important in an arm sustaining means of this character.

Having hereinabove disclosed the invention generically and specifically and described and illustrated one specific embodiment thereof it is apparent that modifications and departures may be made therein without essential departure therefrom and all such modifications and adaptations are contemplated as may fall within the scope of the following claim.

What I claim is:

An adjustable arm support means for an arm horizontally supported on a vertically sustained standard of square cross-section, said support means comprising anarm end having a square cross-section substantially identical to that of the said standard, substantially rectangular side extensions on said arm end extending inthe di- 4 rectlon of the arm end axis, each said arm extension having an inner plane surface aligned with the outer plane surface of said arm providing a space gap therebetween approximating the width of one side of the square-sectioned standard and a length beyond the arm end substantially greater than the width of one side of the square-sectioned standard providing a recess therebetween for receiving the standard therebetween, the remote end of said arm extensions having a width substantially greater than the width of one side of the square-sectioned standard, and a square-sectioned cross-bar secured in axis of said cross-bar disposed in a horizontal plane substantially above the horizontal plane of the upper surface of the said arm end.

' MARVIN WEINBERG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 533,697 Baker Feb. 5, 1895 533,901 Hutchison Feb. 12, 1895 1,412,168 Comingore Apr. 11, 1922 1,414,771 Cantleberry May 2, 1922 1,488,300 Thompson Mar. 25, 1924 1,587,920 Pixler June '8, 1926 2,104,072 Carr Jan. 4, 1938 

